richardson



(No Model.) 3 Sheets-Sheet 1.

J, RICHARDSON. MACHINE FOR GUMMING AND SHARPENING SAWS. No. 316,570.Patented Apr. 28, 1885.

N. PETERS. Phmmlilhugraphun Washmglnn. I c.

(No Model.) 3 Sheets-Sheet z.

r J. RICHARDSON.

MACHINE FOR GUMMING AND SHARPBNING SAWS. No. 316,570. Patented Apr. 28,1885.

(No Model.) 3 Sheets-Sheet 3.

J. RICHARDSON.

MAGHINE FOR GUMMING AND SHARPBNING SAWS.

No. 316,570. Patented Apr. 28, 1885..

N, FEYERS. PholoLdhographar, Washmglblu n. c.

irnn rarns ATFNI rricn.

JOHN RICHARDSON, OF SAN FRANCISCO, CALIFORNIA.

MACHINE FOR GUMMING AND SHARPENING SAWS.

SPECIFICATION forming part of Letters Patent No. 316,570, dated April28, 1885.

Application filed March 2-2, 1884. (No model.)

To all whom it may concern.-

Be it known that I, J OHN RICHARDSON, of the city and county of SanFrancisco, and State of California, have invented an Improvement inMachines for Gumming and Sharpening Saws; and I hereby declare thefollowing to be a full, clear, and exact description thereof.

My invention relates to the class of machines used for gumming andsharpening saws in which an emery or file wheel adapted to be moved bythe various adjustments of the machine to whatever position is desiredis employed to do the grinding or filing.

My invention consists in a machine in which certain adjustments can bemade the object or result of which is to throw the wheel to whateverposition may be required in the best possible manner, and also tovarious construe tions by which these adjustments are made and the wheeldriven. The main adjustment to approach the wheel to the saw is given tothe frame of the machine, which is adapted to be moved to anyinclination on either side of a vertical line. The further adjustment ofthis nature, and also to throw the wheel itself to whatever angle isnecessary to conform it to the edges of the teeth, is given to a crosshead or bar sliding on'and pivoted to the frame, whereby it may be drawnback and forth and turned to any inclination on either side of ahorizontal. A further adjustment back and forth is given to thewheel-shaft directly to fit the wheel accurately to the tooth, and acertain arrangement of pulleys and belts is made in connection with themachine which will permit these adjustments, and yet continue toexercise their function in driving the wheel, all of which I shallhereinafter fully explain.

Referring to the accompanying drawings, Figure l is a rear elevation ofmy machine. Fig. 2 is a front elevation of same. a side elevation ofsame. Fig. l is a plan of same. Fig. 5 is a view of the handle X. Fig. 6is a longitudinal section showing shaft H in the upper part of the frameand the devices mounted upon it. Fig. 7 is a detail side View showingthe changes of the belts to adapt the speed to the emery or the fileWheel. Fig. '8 is a section showing the shifting-pulley F at the bottom.

A are two standard-bearings, from one of which an arm, B, extendsupwardly and car- Fig. 3 is ries a guide-arc, 6, upon its top, as shownin Fig. 3.

O is the frame of the machine, preferably of the shape shown in Figs. 1,2, and having a handle-arm, c, and a short arm, 0. The legs of thisframe are secured by means of screws d to a shaft, D, mounted in thetops of bearings A, and adapted to turn therein to change theinclination of the frame from a vertical to any desired angle toward ahorizontal. Upon this shaft is loosely mounted a pulley, E, and a longpulley, E, of equal diameter to pulley E. Upon this pulley E is ashifting-pulley, F, having a large diameter. This is secured to itsplace by a set-screw, c, Fig. 8, and may be shifted on the pulley E, asshown by the dotted lines. The object of this construction I shall fullyexplain hereinafter.

G, Fig. 7, is the driving-belt, extending from the pulleys G G2 on thedriving-shaft. The larger of these pulleys is equal in diameter to thepulley F and the smaller to the pulley E,- so that the belt may beshifted as hereinafter described.

The movement of the frame 0 is guided on the are b by means of a lip, a,secured to the frame and lapping over the arc. A set-screw, a, throughthis lip fixes theframe wherever desired.

The frame, with its mechanism, which I shall describe, being ratherheavy, I have a counterweight attachment to assistits movement andrelieve the screw to to a great extent.

W is a weight having an arm, w, secured by a screw, w, to the shaft D,to which the legs of the frame are secured. By adjusting the inclinationof the arm the weight is made to exercise its function to the bestadvantage.

Mounted and fixed by a screw, 0, Fig. 6, in the arms 0 c of the frame,is a shaft, H, on one end of which is pivoted orjournaled a groovedguide, I, in which is fitted the cross bar or head, .I, Figs. 3, 4,consisting of a T- shaped piece in cross-section, as shownin Figs. 1, 2.The cross-head is adapted to slide back and forth in the grooved guide,and is fixed at any desired point by means of set screws 7', Fig. 3.

In order to nicely adjust and maintain the cross-head at any desiredangle with the frame, I have the bar K, having a cross-base, k, withends bent on each side of the handle-arm of the frame and set by meansof screws 70. 4 The upper end of this bar has a socket by meansof whichit is fitted over the hub of the grooved guide, and is secured theretoby a set-screw, k Fig. 6. By loosening this screw the guide and itscross-head may be turned to any desired angle and again set, while bythe use of the screws it below this adjustment may be rendered extremelyfine when necessary.

The shaft H has loosely mounted upon it a double-faced pulley, F, thesmaller face of which receives a belt, F from the large pulley F or thesmall pulley E, as the case may be.

One end of the cross-head J is flattened out and widened, its lowerportion being made cylindrical, to serve as a boxing for the shaft L,carrying the emery or file wheel M.

Within the boxing, and on the shaft L, is a sleeve, N, the outer end ofwhich carries a pulley, O. This sleeve is confined in its bearing, andis secured to the shaft L by means of a screw, n, which passes into aslot, Z, .Fig. 3, made in the shaft. This has the effect of featheringthe sleeve and pulley on the shaft, making the two turn together, and atthe same time allowing the shaft to be projected or withdrawn withoutchanging the position of the sleeve and pulley. This movement is accom-'plished by means of the following devices, as shown in Fig. 4.

Extending from the cross-head is an arm, a, through which a screw, P,provided with a hand-wheel, 9, passes.

Upon the end of the shaft L is an arm, Q. The shaft is'journaled in oneend of this arm,- which is held upon it by collars Z. In the other endof the arm is formed a nut, q, through which the adjusting-screw Ppasses. Upon this screw and on each side of the nut q are stop-nuts g,which are used when desired to accurately determine the limit'of motionor adjustment.

Bolted to the end of the cross-head J' is a U- shaped piece, B, Fig. 2,to the arms of which are journaled the pulleys S, Figs. 2, 4.

I T is an endless belt or band, by which power is transmitted to theemery or file wheel. The

course of this belt is from the larger face of pulley F to one of thepulleys S, around which it passes to pulley O on the shaft L, thenceback over-the other pulley S to the pulley F agaln.

Attached to the end of cross-head J is a handle, X, by which the saidcross-head may be readily handled, and a counter-weight, Y, is upon itsother end to assist the movement.

The operation of the machine is as follows: The saw is to be secured toa suitable support in position for the machine to reach it, as

shown in Fig. 3. The inclination of the'entire frame, as shown by thedotted lines in Fig. 3, throws the emery or file wheel close to the saw,and the inclination or adjustment of the cross-head then throws thewheel at the proper angle for the inside edge of the tooth, and theoperation of the screw P causes the wheel to come in contact with thetooth. By

carried over the tooth by the adjustment of the frame, lowers the wheelto the throat, which is ground out by its rim, theother portion or edgesof the tooth being ground by its sides.

In all these adjustments the power continues to be transmitted, as thepulleys and belts are so arranged as not to be affected.

The adjustment of the frame is accomplished by loosening the set-screwa, and moving said frame by the handle 0, and again tightening up thescrew.

Theline-adj ustment of the cross-head is done by loosening the screws jand slipping it back or forth in the grooved guide I. Its adjustment toan angle is effected by loosening the screw k and allowing the guide Ito'turn, and its adjustment may be nicely made by means of the screws k.wheel is made by the screw P. These various movements, either single orcombined, enable me to throw the emery or file wheel to any desiredposition to grind or file the tooth.

I have provided in this machine for the employment of a file-wheel or anemery-wheel, as may be desired. This is the object'of the arrangement ofpulleys at the base of the machine, the object being to acquire greatspeed for the emery-wheel and a much less degree of speed for thefile-wheel.

The pulley E is simply to throw the machine out of gear when desired.

In Fig. 2 the belt F is shown as extending from the large pulley F tothe pulley above, while the driving-belt G extends from the large pulleyG, Fig. 7, to the exposed portion of small pulley E, Fig. 3, on whichthe pulley F is keyed. This arrangement gears the machine upto a highspeed for using the emerywheel; but for the file the belt F is removedentirely, thepulley Fis shifted to oneside,and-

a shorter belt is extended from the smaller The line-adjustment of theICC IIO

pulley E below to the pulley above, and the 1. In a machine for gummingand sharpen.

ing saws, the frame 0, pivoted at its base and adapted to be turned toan inclination on either side of a vertical line, and the grooved guideI, pivoted in the top of said frame and adapted to be turned to aninclination on either side of a horizontal line, in combination with thecross-head J, fitted in the grooved guide and adapted to be adjustedforward or back, the emery or file wheel M, mounted on the shaft L, anda mechanism for transmitting power to said wheel, substantially asherein described.

2. In a machine for gumming and sharpening saws, the pivoted frame 0, incombination with the cross-head J ,fitted in a supportingguide,the shaftL, mounted on said cross-head, and the emery or file wheel M, mounted onsaid shaft, means for adjusting said shaft back and forth, and mechanismfor rotating the wheel, substantially as herein described.

3. In a machine for gumming and sharpening saws, the pivoted frameC andthe grooved guide I, pivoted in the top of said frame and adapted to beadjusted as described, in combination with the cross-head J, fitted inthe guide and adapted to be adjusted with said guide, and also forwardor back, the shaft L, mounted in the cross-head, and emery or file wheelM, mounted on said shaft, means for ad- 2 5 justing said shaft back andforth, and mechanism for rotating the wheel, substantially as hereindescribed.

4. In a machine for gumming and sharpening saws, the frame 0, carryingthe grinding mechanism,and the rocking shaft D, by which its base ispivoted, in combination with the weight WV, weighted arm w, set on saidshaft, and a set-screw, 10, whereby the movement of the frame isrendered easy, substantially as described.

5. In a machine for gumming and sharpening saws, the frame 0, pivoted atthe base, the shaft H, fixed in the top of the frame, and grooved guideI, pivoted or journaled on said shaft, in combination with thecross-head J, fitted and adapted to be adjusted in said guide, the shaftL,carrying the emery'or file wheel M, and a connection between the guideI and frame 0 to hold the former at the place to which it is turned whenadjusting the inclination of the cross-head, substantially as hereindescribed.

6. In a machine for gumming and sharpening saws, the frame 0, pivoted atits base, the shaft H, fixed in the top of said frame, and the groovedguide I, pivoted on said shaft, in combination with the cross-head J,fitted and adapted to be adjusted in said guide, the shaft L, carryingthe emery or file wheel M, and the bar K, having a cross-base, 7s,embracing and set to the frame by adjusting-screws 7c, and having itsupper end set on the hub of guide I by a screw, is, substantially as andfor the purpose herein described.

7. In a machine for gumming and sharpening saws, the frame G, the baseof which is fixed on a shaft, D, mounted in bearings A, the shaft H,fixed in the top of the frame, and cross-head J, secured by means of aguide to said shaft, the shaft L, carrying the emery or formed on saidcross-head and parallel therewith, the emery or file wheelM on the endof the shaft, suitable mechanism for rotating said shaft, and the meansfor adj ustingit back and forth, consisting of the arm'Q, in one end ofwhich said shaft is journaled and confined, and the adjusting-screw P,passing through arm in and through a nut, q, in the end of arm Q,substantially as herein described.

9. In a machine for gumming and sharpening saws, the pivoted frame 0,shaft H in its top and having the grooved guide I, in combination withthe cross-head J, the shaft L, mounted in its end, the emery or filewheel M on said shaft, and means for adjusting said shaft and wheel backand forth, as described, and the means for transmitting power to saidwheel, consisting of the pulley F, loose on shaft H, and to which poweris transmitted in suitable manner, the pulleys S on the end of thecross-head, the pulley O, feathered on shaft L by means of sleeve N andscrew it and slot Z, and the belt or band T, all arranged and operatingsubstantially as herein described.

10. In a machine for gumming and sharpening saws, the frame 0, havinghandle-arm c and arm 0, the shaft D, by means of which said frameispivoted to adapt it to have an inclination on either side of a verticalline, the means for fixing said frame where adjusted, the shaft H, fixedin arms 0 c, and having the grooved guide I, pivoted upon it, incombination with the cross-head J, fitted and set by screws in saidguide, and adapted to' have an adjustment therein back and forth and anadjustment therewith to an inclination on either side of a. horizontal,the bar K, set to the frame and to the guide by suitable screws, wherebythe latter adjustment of the cross head is regulated and limited, theshaft L in said cross-head, and emery or file wheel M on the sh aft, thescrew I, suitably connected with crosshead and shaft L forgiving thelatter an adjustment back and forth, and suitable pulleys on shafts D HL and cross-head J, and belts for transmitting power to rotate the wheelM, substantially as herein described.

In witness whereof I have hereunto set my hand.

JOHN RICHARDSON.

Witnesses:

O. D. GoLE, J. H. BLOOD, 7

